Fair Value Measurements - Fair value on a nonrecurring basis (Details) - Foreclosed and repossessed assets held for sale - USD ($) $ in Thousands	Dec. 31, 2020	Jun. 30, 2020
Fair value measurement, non-recurring basis	$ 607	$ 2,211
Fair Value, Inputs, Level 1
Fair value measurement, non-recurring basis	0	0
Fair Value, Inputs, Level 2
Fair value measurement, non-recurring basis	0	0
Fair Value, Inputs, Level 3
Fair value measurement, non-recurring basis	$ 607	$ 2,211